300 civilians are believed to have been massacred by the rebels.
据信300名平民被叛乱分子屠杀了。
Most volcanoes that occur in the interiors of plates are believed to be produced by mantle plumes, columns of molten rock that rise from deep within the mantle.
人们认为，大多数发生在板块内部的火山爆发都是由地幔柱造成的，地幔柱是指从地幔深处涌出的熔岩柱体。
The vases are believed to be worth over $20 000 each.
那些花瓶据估计每个价值都超过2万元。
Washington and Moscow are believed to have similar views on Kashmir.
华盛顿和莫斯科被认为在克什米尔问题上持有相似的观点。
Even numbers, except four, are better than odd-as good things are believed to come in pairs.
偶数，除了4，都比奇数好，因为人们相信好事成双。
Humans are believed to be tied to nature.
人们认为人类与自然息息相关。
Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.
行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。
There are two main groups of bats, which are believed to have evolved independently of each other, but both from a common ancestor.
蝙蝠主要有两大类，人们认为它们是各自独立进化的，但都来自同一个祖先。
The same minerals that occur in refractory inclusions are believed to be the earliest-formed substances to have condensed out of the solar nebula.
难熔的内含物中的那种矿物质，也被认为是最早形成的太阳星云凝结的物质。
On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.
在地球上，人们认为，表明太阳黑子周期最可靠的迹象之一是树木的生长速度，就像树干横截面上可见的年轮一样。
Some 200 more are believed to be awaiting approval.
据信，还有大约200家机构正等待审批。
One-eighth of those interned are believed to be children.
我的翻译是“在逮捕的人中估计有1/8的是儿童”。
Some foreigners are believed to be held hostage by the gunmen.
据信，枪手把一些外国人扣押为人质。
The thefts are believed to have continued into the early 1980s.
普遍认为窃婴案一直持续到 20 世纪 80 年代早期。
Many more decommissioned submarines are believed to be in Russian northwest.
还有更多的退役潜艇被认为是在俄罗斯西北地区。
There are believed to be tens of thousands of Burmese refugees living in India.
据信，有上万的缅甸难民生活在印度。
Over 500 are believed missing or dead, according to a tally of survivors' accounts.
根据一份关于幸存者数量的调查统计，人们相信至少有500人失踪或死亡。
Thousands of people are believed still buried beneath collapsed homes, offices, and schools.
据信仍有上万人被埋在倒塌的房屋、办公楼以及校舍下面。
Many of these chemicals are believed to toxic to humans and animals, the scientists said.
科学家认为，这些化学物质中有很多会对人类和动物造成毒害。
About 400 people are believed to have been on the island that day; only about half survived.
那天至少有400人在这个小岛上，但仅有一半人生还。
The most serious occurred in 1918 when upwards of 50 million people are believed to have died.
最严重的那次发生在1918年，据信有超过5千万人死亡。
Similar incidents are believed to have happened at Charles River Laboratories and Vanderbilt University.
相信类似的事情在查尔斯河实验室和范德比尔特大学也有发生。
Cobra hearts are believed to enhance male virility in Vietnam, gastroenterologist Harry Teicher says.
在越南，人门相信眼镜蛇心脏能够提升男子性功能，肠胃病学教授哈利-泰歇如是说。
The two antibodies are believed to be about 10 times more powerful than the previously discovered ones.
这两种抗体据信威力比过去发现的抗体强10倍左右。
Free radicals are believed to be a first important step in heart disease, cancer and the ageing process.
自由基被认为是心脏病，癌症和老化过程中重要的第一步。
Both are believed to have important roles in sea ice dynamics, but how important they are remains unclear.
认为这两者在海冰动力学方面都有重要的作用，但是他们尚不清楚是多么重要。
Several companies are believed to be working on them, and I expect them to be available later in the year.
据说几家公司正在进行研发，我预计今年晚些时候就会面市。
In space, black holes are believed to generate intense gravitational fields that suck in all surrounding matter.
在宇宙空间中，一般认为黑洞产生的强引力场可以把周围吸所有的物质吸入其中。
The funds are believed to account for a slightly smaller proportion of activity in the distressed debt arena too.
据信，在不良债务领域，对冲基金所占份额略低于上述水平。
The funds are believed to account for a slightly smaller proportion of activity in the distressed debt arena too.
据信，在不良债务领域，对冲基金所占份额略低于上述水平。
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